氢化物发生-原子荧光光谱法测定仿真饰品中可萃取砷锑汞硒

摘要

Sample of imitation jewelry was treated with artificial acid sweat solution which was simulated human's skin condition , and a method for determination the extractable As, Sb, Hg and Se by hydride generation - atomic fluorescence spectrometry (HG - AFS) was established. Test conditions was optimized and the interference of coexistence ions were studied. The detection limits were 0.044, 0.011, 0.003, 0.041 ng/L for As, Sb, Hg and Se respectively. The imitation jewelry was determined, the RSD was 2.9% -9. 1% ( n = 3 ) , and the recoveries of the four elements ranged from 88. 2% to 108. 5% .%模拟人体皮肤环境,采用酸性汗液处理样品,通过氢化物发生-原子荧光光谱法测定仿真饰品中可萃取砷、锑、汞和硒.优化了实验条件,研究了共存离子的干扰.砷、锑、汞和硒的检出限分别为0.044,0.011,0.003,0.041 μg/L.采用该法对仿真饰品进行测定,测定结果的相对标准偏差为2.9%-9.1% (n=3),回收率为88.2%-108.5%.